---
name: "Marsh Gas"
mana_cost: "{B}"
cmc: 1
type_line: "Instant"
colors: ["B"]
color_identity: ["B"]
keywords: []
set: "4BB"
set_name: "Fourth Edition Foreign Black Border"
collector_number: "146"
rarity: "common"
artist: "Douglas Shuler"
oracle_id: "08ae9f91-48c8-4721-a82d-063defc1b727"
canonical_url: "https://avascry.com/printing/marsh-gas-4bb"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "not_legal"
  pioneer: "not_legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "legal"
  penny: "not_legal"
---

# Marsh Gas
- **Mana Cost:** `{B}` (CMC: 1)
- **Type:** Instant

## Oracle Text
All creatures get -2/-0 until end of turn.

## Top 4096-Dim Neural Synergies
1. [Infest](/printing/infest-prm.md) — Sorcery
2. [Hell Swarm](/printing/hell-swarm-leg.md) — Instant
3. [Nausea](/printing/nausea-ema.md) — Sorcery
4. [Shrivel](/printing/shrivel-m14.md) — Sorcery
5. [Last Gasp](/printing/last-gasp-jmp.md) — Instant
6. [Fatal Fumes](/printing/fatal-fumes-dgm.md) — Instant

## Printing Details
- **Set:** Fourth Edition Foreign Black Border (4BB) #146
- **Rarity:** Common
- **Artist:** Douglas Shuler
- **Total Printings:** 16 across all historical editions

## Format Legalities
Commander: `legal` | Standard: `not_legal` | Modern: `not_legal` | Pioneer: `not_legal` | Legacy: `legal` | Vintage: `legal` | Pauper: `legal` | Penny: `not_legal`